Propranolol is a non-selective beta-adrenergic blocker, meaning it affects both beta-1 and beta-2 receptors. It was one of the first beta-blockers developed and is used to treat a range of cardiovascular and other conditions. Originally approved by the FDA in 1967, it blocks the action of adrenaline and noradrenaline on these receptors, leading to various physiological effects. It is commonly prescribed in oral tablet form, though other formulations exist for specific medical uses (as described by DrugBank). Propranolol's effects include reducing heart rate, blood pressure, and myocardial contractility (as per resources like Mayo Clinic and MedlinePlus). It is also known for its lipophilicity, which allows it to cross the blood-brain barrier, contributing to its effectiveness in conditions affecting the central nervous system.
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Known interactions
Category rule: supplement × medication
Note
Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).
Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.
Category rule: vitamin × medication
Note
Certain vitamins interact with specific medications (e.g., vitamin K with blood thinners).
Specific pairs are checked against a licensed source; confirm with your provider.
Frequently asked
Sources referenced
* DrugBank
* Food and Drug Administration (FDA) Prescribing Information
* MedlinePlus
* Mayo Clinic
* National Institutes of Health (NIH) Office of Dietary Supplements (ODS)
* PubChem
* Cochrane Library
* Examine.com
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the medication category or studied for the same goals.
